Missouri Department of Transportation

STAKEHOLDER INTERACTION AT CLOSED SITES

Weldon Spring SiteWeldon Spring, Missouri

Kevin WidemanSr. Environmental Specialist

INTRODUCTION

Weldon Spring is the site of a former chemical and radiological facility

This site included a manufacturing facility with disposal ponds on site

It also included a quarry that was used for disposal of waste

MoDOT has two highways, Routes D and Route 94 that traverse the area

MoDOT also has a maintenance lot next door to the disposal cell

Weldon Spring Site

Weldon Spring Chemical Plant

The Site Today

Weldon Spring SiteRoute D Culverts

Disposal Cell MoDOT

Maintenance Facility Route 94

Culvert

Quarry Miss

ouri

River

MoDOT Areas Affected

Route 94 Culvert

Installed by the army under 40 feet of fill

Consists of corrugated metal that is rusting

Culvert is contaminated Removal costs about $1

million Fix and leave in place

with future replacement when needed

60 inch X 225 feet

Route 94 Immediate Repairs

Culvert before repairs Culvert after repairs on 8/25/10

Route 94 Future Needs

After collapsed end was cut away

Water had undercut the end

Culvert still intact but will need replacement or lined in the future

Route 94 Culvert Downstream

Fill is washed away from around the culvert

This section broke away

Isn’t necessary for integrity of the highway

DOE’s discretion on what to do with it

Route D Culverts

Installed by Army Consists of corrugated

metal that was rusting Believed contamination

is under the culverts Removal and

replacement to be done next year

Cooperative coordination between DOE and MoDOT to replace

2 - 60 inch X 82 feet

Route D Culverts

MoDOT’s contractor will uncover the culverts

DOE contractor will remove along with any contaminated soil

MoDOT will supply fill material

Working Together

Missouri is the “Show Me State”

We need to see to accept

Several Missouri state agencies were involved

MoDOT, DOC, DNR, DNR Parks

DNR is the central contact

Central Contact

One central state contact

Everyone was kept informed

Easier to work with DOE and for DOE to work with the agencies

MoDOT concerned with protecting our employees and the public

Open Comunicaton

MoDOT assigned one central contact within the department

Maintenance people were briefed

Design and construction to coordinate future efforts

DOE provided educational opportunities for employees

Future Route D Improvements

Widen Route D next spring

Culvert replacement will be coordinated

Route D will be shut down for two days

MoDOT’s contractor will remove the overburden

DOE will remove the culverts and any contaminated soil

MoDOT will replace the fill and culverts and finish the project

Future Route D Improvements

Disposal of the culverts will be determined

If they are not contaminated they will be recycled

DOE has offered to be present at the pre bid meeting to answer any questions from contractors

Future Route 94 Improvements

Route 94 cannot be shut down

Shoulders are being added to Route 94

Culvert replacement or repair will be coordinated with DOE

MoDOT will continue to work with DOE

Interpretive Center DOE’s interpretive center next door has

been a great educational tool to educate MoDOT employees